California unveils earthquake warning system
New system sends earthquake warnings through an app and the wireless system that issues Amber Alerts; insight from Richard Allen, director of the UC Berkeley Seismological Lab.
An earthquake in northern Oklahoma on Saturday night rattled the entire state, including in Tulsa just after President Trump finished his return to the campaign trail before thousands of supporters.
The U.S. Geological Survey said the magnitude 4.2 earthquake happened at 10:15 p.m. near Perry, roughly 80 miles west of Tulsa.
The temblor was about 4.8 miles deep, with impacts being felt around the state.
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Residents in Stillwater, Enid, Ponca City, and Oklahoma City all reported shaking.
The U.S. Geological Survey said the magnitude 4.2 earthquake happened at 10:15 p.m. near Perry, roughly 80 miles west of Tulsa. (USGS)
Over 200 people reported the quake to the USGS, according to FOX25.
The National Weather Service (NWS) office in Tulsa said on Twitter that its staff felt the tremor in its Tulsa office, and the earthquake generated social media buzz after Trump's appearance.
Saturday night's quake was the largest recorded earthquake in Oklahoma since a magnitude 4.4 quake in May 2019.
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Thousands of earthquakes have been recorded in Oklahoma in recent years, with many linked to the underground injection of wastewater from oil and gas production.
Regulators have directed producers to close some injection wells.
The Associated Press contributed to this report.
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